Sapling supporting frame for tree planting

The utility model discloses a sapling supporting frame for tree planting, which comprises a fixing ring, a positioning part for fixing a sapling, a locking part for locking the supporting frame and a blocking part, the positioning part comprises two fixing frames arranged on the fixing ring, sliding grooves formed in the fixing frames, a contraction plate arranged on one side of the fixing frames, a telescopic column arranged on one side of the contraction plate, a push piece arranged at one end of the telescopic column, a plurality of positioning holes formed in the telescopic column and positioning buttons arranged on the upper portions of the fixing frames. Through the arrangement of the fixing rings, the fixing frames, the sliding grooves, the shrinkage plates, the telescopic columns, the pushing pieces, the positioning holes and the positioning buttons, the problems that due to the fact that an existing sapling supporting frame cannot adjust the size of the supporting frame and fix saplings of different